Exemple #1
0
    def from_input_to_mcmc_parameters(self, dictionary):
        """
        Converts dictionary of raw quantities into a meaningful one.

        At the end of this initialization, every field but one is filled for
        every parameter, be it fixed or varying. The missing field is the
        'last_accepted' one, that will be filled in the module :mod:`mcmc`.

        The other fields are

        `initial`:
            initial array of input values defined in the parameter file.
            Contains (in this order) `mean`, `minimum`, `maximum`, `1-sigma`.
            If the min/max values (**TO CHECK** proposal density boundaries)
            are unimportant/unconstrained, use `None` or `-1` (without a period
            !)
        `scale`:
            5th entry of the initial array in the parameter file.
        `role`:
            6th entry of the initial array, can be `cosmo`, `nuisance` or
            `derived`. A `derived` parameter will not be considered as varying,
            but will be instead recovered from the cosmological code for each
            point in the parameter space.
        `tex_name`:
            A tentative tex version of the name, provided by the function
            :func:`io_mp.get_tex_name`.
        `status`:
            Depending on the `1-sigma` value in the initial array, it will be
            set to `fixed` or `varying` (resp. zero and non-zero)
        `current`:
            Stores the value at the current point in parameter space (`not
            allowed initially`)

        .. note::

            The syntax of the parameter files is defined here - if one
            wants to change it, one should report the changes in there.

        :Parameters:
            - **dictionary** (`dict`) - raw dictionary containing the input
              from the parameter file. Its content will be transformed and
              processed into the final :attr:`mcmc_parameters`

        """
        for key, value in dictionary.iteritems():
            self.mcmc_parameters[key] = od()
            self.mcmc_parameters[key]['initial'] = value[0:4]
            self.mcmc_parameters[key]['scale'] = value[4]
            self.mcmc_parameters[key]['role'] = value[-1]
            self.mcmc_parameters[key]['tex_name'] = io_mp.get_tex_name(key)
            if value[3] == 0:
                self.mcmc_parameters[key]['status'] = 'fixed'
                self.mcmc_parameters[key]['current'] = value[0]
            else:
                self.mcmc_parameters[key]['status'] = 'varying'
Exemple #2
0
    def __init__(self, array, key):
        """
        This class replaces the old function defined in the Data class, called
        `from_input_to_mcmc_parameters`. The traduction is now done inside the
        Parameter class, which interprets the array given as an input inside
        the parameter file, and returns a dictionary having all relevant fields
        initialized.

        .. warning::

            This used to be an ordered dictionary, for no evident reason. It is
            now reverted back to an ordinary dictionary. If this broke
            anything, it will be reverted back

        At the end of this initialization, every field but one is filled for
        the specified parameter, be it fixed or varying. The missing field is
        the 'last_accepted' one, that will be filled in the module :mod:`mcmc`.

        .. note::

            The syntax of the parameter files is defined here - if one
            wants to change it, one should report the changes in there.

        The other fields are

        Attributes
        ----------
        initial : array
            Initial array of input values defined in the parameter file.
            Contains (in this order) `mean`, `minimum`, `maximum`, `1-sigma`.
            If the min/max values (**TO CHECK** proposal density boundaries)
            are unimportant/unconstrained, use `None` or `-1` (without a period
            !)
        scale : float
            5th entry of the initial array in the parameter file, defines the
            factor with which to multiply the values defined in `initial` to
            give the real value.
        role : str
            6th entry of the initial array, can be `cosmo`, `nuisance` or
            `derived`. A `derived` parameter will not be considered as varying,
            but will be instead recovered from the cosmological code for each
            point in the parameter space.
        prior : :class:`Prior <prior.Prior>`
            defined through the optional 7th entry of the initial array, can be
            ommited or set to `flat` (same), or set to `gaussian`. An instance
            of the :class:`prior` defined in :mod:`prior` will be initialized
            and set to this value.
        tex_name : str
            A tentative tex version of the name, provided by the function
            :func:`io_mp.get_tex_name`.
        status : str
            Depending on the `1-sigma` value in the initial array, it will be
            set to `fixed` or `varying` (resp. zero and non-zero)
        current : float
            Stores the value at the current point in parameter space (`not
            allowed initially`)

        Parameters
        ----------
        value : list
            Array read from the parameter file
        key : str
            Name of the parameter

        """
        # calling the parent method initialization
        dict.__init__(self)

        self['initial'] = array[0:4]
        self['scale'] = array[4]
        self['role'] = array[-1]
        self['tex_name'] = io_mp.get_tex_name(key)
        if array[3] == 0:
            self['status'] = 'fixed'
            self['current'] = array[0]
        else:
            self['status'] = 'varying'
        self['prior'] = prior.Prior(array)
Exemple #3
0
    def __init__(self, array, key):
        """
        This class replaces the old function defined in the Data class, called
        `from_input_to_mcmc_parameters`. The traduction is now done inside the
        Parameter class, which interprets the array given as an input inside
        the parameter file, and returns a dictionary having all relevant fields
        initialized.

        .. warning::

            This used to be an ordered dictionary, for no evident reason. It is
            now reverted back to an ordinary dictionary. If this broke
            anything, it will be reverted back

        At the end of this initialization, every field but one is filled for
        the specified parameter, be it fixed or varying. The missing field is
        the 'last_accepted' one, that will be filled in the module :mod:`mcmc`.

        .. note::

            The syntax of the parameter files is defined here - if one
            wants to change it, one should report the changes in there.

        The other fields are

        Attributes
        ----------
        initial : array
            Initial array of input values defined in the parameter file.
            Contains (in this order) `mean`, `minimum`, `maximum`, `1-sigma`.
            If the min/max values (**TO CHECK** proposal density boundaries)
            are unimportant/unconstrained, use `None` or `-1` (without a period
            !)
        scale : float
            5th entry of the initial array in the parameter file, defines the
            factor with which to multiply the values defined in `initial` to
            give the real value.
        role : str
            6th entry of the initial array, can be `cosmo`, `nuisance` or
            `derived`. A `derived` parameter will not be considered as varying,
            but will be instead recovered from the cosmological code for each
            point in the parameter space.
        prior : :class:`Prior <prior.Prior>`
            defined through the optional 7th entry of the initial array, can be
            ommited or set to `flat` (same), or set to `gaussian`. An instance
            of the :class:`prior` defined in :mod:`prior` will be initialized
            and set to this value.
        tex_name : str
            A tentative tex version of the name, provided by the function
            :func:`io_mp.get_tex_name`.
        status : str
            Depending on the `1-sigma` value in the initial array, it will be
            set to `fixed` or `varying` (resp. zero and non-zero)
        current : float
            Stores the value at the current point in parameter space (`not
            allowed initially`)

        Parameters
        ----------
        value : list
            Array read from the parameter file
        key : str
            Name of the parameter

        """
        # calling the parent method initialization
        dict.__init__(self)

        self['initial'] = array[0:4]
        self['scale'] = array[4]
        self['role'] = array[-1]
        self['tex_name'] = io_mp.get_tex_name(key)
        if array[3] == 0:
            self['status'] = 'fixed'
            self['current'] = array[0]
        else:
            self['status'] = 'varying'
        self['prior'] = prior.Prior(array)